Home / 20,908.85-31,362.05-15,292.21

Finding the Fourth Proportional to 20,908.85, 31,362.05 and 15,292.21

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Solution

The fourth proportional to 20,908.85, 31,362.05 and 15,292.21 is: 22,937.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,908.85 : 31,362.05 = 15,292.21 : x
  2. Step 2: Convert to fraction form
    20,908.85/31,362.05 = 15,292.21/x
  3. Step 3: Cross multiply
    20,908.85x = 31,362.05 × 15,292.21
  4. Step 4: Simplify right side
    20,908.85x = 479,595,054.63
  5. Step 5: Solve for x
    x = 479,595,054.63/20,908.85
  6. Step 6: Final answer
    x = 22,937.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.